Elemental Smite

 
Prerequisite(s): Cha 11+, Knowledge (the planes) 3+ ranks, at least one elemental graft.
 
Benefit: You can attempt to smite a creature with one normal melee attack. You deal one extra point of energy damage per character level. The graft donor of one of your elemental grafts determines the type of energy damage:
 
Air: Electric.
 
Earth: Acid.
 
Fire: Fire.
 
Water: Cold.
 
If you have more than one elemental graft, you choose one of the grafts associted enrgy types when you attempt the smite. If you smite a creature that has immunity to that type of energy, the smite has no effect but the ability is still used for that day. You can use the snite ability once per day, plus one additional time per 5 levels attained.
 
 
Source: Magic of Eberron